I have a 12 tilt head Craftsman Band Saw that won't hold the drive belt on the blade spindle. The saw will run for a few minutes and then the belt comes off. I have tryed to tighten the belt also to move to belt wheel on the motor abor out a bit for better alignment but nothing seems to work. Can you help?

SOURCE: manual craftsman band saw

I just went to Sears.com and then to Sears Parts Direct (down at the bottom of page under Craftsman tools) and typed in your model number. You can look at this manual online. Good luck

SOURCE: Band Saw Blade won't stay on

A lot of the larger band saws, and I don't know about your particular model, has an ajustment on the bottom wheel that tilts the wheel in order to track the blade. It is right at the axle and tilts it from there.  If the back guide is a roller bearing I woud think you would want to roll all of the time.  If a solid bearing block natually a small space where it  will not hit is enough.   

SOURCE: I have a Craftsman 10 inch band saw. The blade

the blade tension shaft in the rear top of the saw should also have a tracking adjustment knob that tilts the top wheel. Open the top guard and spin the top wheel by hand and adjust the tracking knob until the blade atays on. Better unplug the saw until you get this done, then you can power the saw back up and fine tune the tracking while running until it is perfect. hope this helps you.

SOURCE: My band saw (craftsman 12" tilt head) stopped

Hello'
I have the exact same saw. It sounds like the key stock came out of the pulley attached to the lower wheel. I will give you a quick rundown.
-unplug saw
-you will have to lay the saw on its side so you can remove the motor and drive belt.
-there are 2 seperate pulleys , the one connected to the motor and the one connected to the bottom wheel.
-loosen motor nuts and remove motor, pay close attention when removing motor 3 of the 4 studs have sleeve like spacers.
-once motor and belt are out of the way check the pulley on the bottom wheel,my guess is that the key stock came out and the pulley spins freely.
-loosen set screw,replace keystock and tighten.
-NOTE the keystock may have came out of the motor pully instead,check.

Now this next part is real important.
-once you get it figured out and are ready to put everything back together the 2 pulleys must be perfectly lined up, use a flat ruler, using your eye will not work.line the drive pulley up with the lower pulley. ( the pulley on the motor has a shoulder on it so when it is pushed towards motor it will be set in the right spot) .

It is either the pulley on the motor or the wheel that has lost its keystock.

It should be a easy fix,Good luck